Should I maintain NC?

Been NC with nmom and edad for about 7 months. Last time we talked, they knew I might be in a situation which could affect my entire life.

I am going on holiday later today. And today of all days, I get a text from nmom: I am suffering. I might need to have a surgery on my jaw. I really need your support.

No apology for how she treated me the last time we talked. No question about if/how the big problem I faced back then got resolved. Just this.

I know she is trying to make me feel guilty and trap me back in. I feel so angry it happened on the day I go for my 2-week holiday, which I was really looking forward to. But part of me wonders if ignoring and blocking her and edad makes me a terrible person. And if I should offer her support instead.

I really want to be able to enjoy my holiday! Any thoughts?